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A076864 Inverse Euler transform of 1, 3, 8, 23, ... (A050535). 4
1, 2, 5, 12, 33, 103, 333, 1183, 4442, 17576, 72810, 314595, 1410139, 6541959, 31322474, 154468852, 783240943, 4077445511, 21765312779, 118999764062, 665739100725, 3807640240209, 22246105114743, 132672322938379, 807126762251748 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

Also the number of connected multigraphs on n edges. - Gordon Royle, Mar 09 2005.

LINKS

N. J. A. Sloane, Transforms

CROSSREFS

Cf. A050535, A076865-A076867.

Sequence in context: A000669 A191769 A004114 * A196545 A032292 A151408

Adjacent sequences:  A076861 A076862 A076863 * A076865 A076866 A076867

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Nov 23 2002

EXTENSIONS

More terms from Sean A. Irvine (sairvin(AT)xtra.co.nz), Oct 02 2011

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.